KR101832071B1 - Radio frequency signal repeater with wavelength adjustment function - Google Patents

Abstract

The present invention relates to a repeater of a disaster broadcasting system using frequency modulation (FM) and terrestrial digital multimedia broadcasting (T-DMB). More particularly, the present invention relates to a wireless FM/DMB frequency signal repeater with a wavelength adjustment function to connect various antennas of different lengths and different shapes to an antenna port by adjusting wavelengths according to lengths and types of antenna. The repeater includes a module body and a repeater module.

Description

[0001] The present invention relates to a radio frequency signal repeater with wavelength adjustment function,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repeater for a disaster broadcasting system using frequency modulation (FM) and terrestrial digital multimedia broadcasting (T-DMB), and more particularly, DMB frequency signal relaying apparatus having a wavelength adjusting function for allowing various antennas of different lengths and different types to be connected to an antenna port.

Generally, in case of a disaster, information is quickly transmitted to anyone in order to ensure the safety of the public, and a disaster broadcast is broadcast in order to communicate the disaster-related countermeasures.

Frequency-modulated (FM) broadcasting and terrestrial digital multimedia broadcasting (T-DMB) are applied as media for such a disaster broadcast.

Generally, the FM system and the T-DMB system use different frequency bands, and the system configuration is different. Due to the difference in configuration, each disaster broadcasting system for FM broadcasting and T_DMB disaster broadcasting should be constructed, so that many devices are installed in shelters such as underground shelters, public housing, underground buildings and tunnels.

One such device is a radio frequency signal relay device. Typically, a radio frequency signal relay device enhances an input radio frequency signal and then optimizes the radio frequency signal relay device to transmit again through a connected specific antenna.

As described above, the radio frequency signal relay device is connected to a specific antenna designed to be optimized for the device. Recently, external antennas and chip antennas having various lengths and shapes have been developed and marketed, but they have not been used in radio frequency signal relaying devices.

This means that it is not possible to apply other external antennas and chip antennas when a specific antenna of the radio frequency signal repeater fails and breaks, so it is necessary to re-purchase a specific antenna.

Therefore, when the specific antenna of the conventional radio frequency signal repeater is broken or damaged, the maintenance manager can not secure the antenna quickly, and there is a problem that the purchase cost due to the use of only the specific antenna is increased.

Registration No. 10-1629997 (June 06, 2016)

Accordingly, it is an object of the present invention to provide a wireless FM / DMB frequency signal relay device capable of adjusting wavelengths according to lengths and types of antennas and having a wavelength adjusting function for connecting various antennas of different lengths and different types to an antenna port. .

According to an aspect of the present invention, there is provided a wireless FM / DMB frequency signal relay apparatus having a wavelength tuning function, the apparatus comprising: an input port for receiving a radio frequency (RF) signal; A module body having an antenna port for transmitting a radio frequency signal reinforced by a connected antenna; And a wavelength tuning unit configured to adjust a wavelength of a radio frequency signal input through the input port according to a wavelength adjustment value preset to correspond to an antenna connected to an antenna port of the module body, The relay module includes an impedance matching unit for matching a radio frequency signal input through the input port to an impedance of the device and transmitting the radio frequency signal; A signal loss occurring upon reception through a coaxial cable connected to the input port according to a frequency band difference of at least one or more signals included in a radio frequency signal of a radio frequency signal input from the impedance matching unit, A tilt adjusting unit for outputting a frequency signal;
A radio frequency signal processor for relaying and enhancing a radio frequency signal compensated for the signal loss and outputting the radio frequency signal; And an antenna wavelength adjusting section for adjusting and outputting the wavelength of the relayed radio frequency signal according to the wavelength adjustment value preset to correspond to the antenna, wherein the antenna wavelength adjusting section includes a variable inductance input section, A variable inductor for performing wavelength length adjustment matching of the antenna with respect to the radio frequency signal according to an inductance according to adjustment of the variable inductor; And a variable capacitor including a variable capacitance input part and performing a radio frequency impedance matching with the antenna for the radio frequency signal according to a capacitance of the variable capacitance input part controlled by the variable capacitance input part.

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Wherein the tilt adjusting unit includes a variable resistor, a fixed capacitor, and a fixed inductor, the variable resistor determining a slope curve of the radio frequency signal according to the adjusted variable resistance value, and the fixed capacitor has a resistance value of the variable resistance, The fixed inductor is controlled by the resistance value of the variable resistor and the value of the capacitor to adjust the signal loss rate for each frequency band. The characteristic impedance of the fixed inductor is controlled by the value of the inductor, .

Wherein the radio frequency signal is a mixed radio frequency signal in which an FM signal and a DMB signal are mixed, the radio frequency signal processor includes: a relay distributor for distributing the mixed radio frequency signal to output a temporary distributed mixed radio frequency signal; An FM relay processing unit for filtering the FM signal from the temporary distribution mixed radio frequency signal distributed in the relay distribution unit, and performing a reinforcement according to the relaying and outputting the FM signal; A DMB relay processing unit for filtering a DMB signal from the temporary distribution mixed radio frequency signal distributed in the relay distribution unit, performing a relay enhancement on the DMB signal, and outputting the signal; And a mixing unit for combining the FM signal reinforced by the FM relay processing unit and the DMB signal reinforced through the DMB relay processing unit to generate and output a reinforced mixed radio frequency signal.

Wherein the FM relay processing unit comprises: an FM low-pass filtering unit for performing low-pass filtering on the temporary distribution mixed radio frequency signal distributed in the relay distribution unit and outputting an FM signal; An FM amplifier for amplifying and outputting the FM signal; An FM gain controller for adjusting and outputting the gain of the amplified FM signal; And an FM high-pass filtering unit for high-pass filtering the FM signal whose gain is adjusted and outputting the resultant signal.

Wherein the DMB relay processing unit comprises: a DMB high-pass filtering unit for performing a high-pass filtering on the temporary distribution mixed radio frequency signal distributed in the relay distribution unit to output a DMB signal; A DMB amplifier for amplifying and outputting the DMB signal; A DMB gain controller for adjusting and outputting the gain of the amplified DMB signal; And a DMB low-pass filtering unit for performing low-pass filtering on the DMB signal whose gain is adjusted and outputting the mixed radio frequency signal and the DC signal.

The apparatus may further include: a low noise amplifying unit connected between the tilt adjusting unit and the RF signal processing unit for low-noise amplifying the RF signal output from the tilt adjusting unit and transmitting the RF signal to the RF signal processing unit.

The apparatus may further include: a high power amplifier connected between the radio frequency signal processor and the antenna wavelength adjuster for high-power amplifying a radio frequency signal output from the radio frequency signal processor and transmitting the amplified radio frequency signal to the antenna wavelength adjuster.

The apparatus includes: an input RF level measurement unit connected between the input port and the impedance matching unit to measure a level of a radio frequency signal input through the input port and output a radio frequency signal level; And an input RF level display unit for receiving and displaying the radio frequency signal level.

The apparatus includes: an output RF level measuring unit connected between the high power amplifier and the antenna wavelength adjuster for measuring a level of a radio frequency signal output from the high power amplifier and outputting a radio frequency signal level; And an output RF level display unit for receiving and displaying the RF signal level.

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The present invention has the effect of easily applying various antennas such as external antennas and chip antennas of various lengths and various types to a wireless FM / DMB frequency signal relay device.

Since various antennas can be applied to the present invention, the antenna can be secured and installed quickly in the event of breakage or failure of the antenna, so that the maintenance can be simplified and the maintenance can be speeded up.

In addition, the present invention improves reception performance by making it possible to apply various antennas, less restriction on the installation space, and an effect of reducing the antenna supply price due to the supply of various antennas. That is, the present invention has the effect of reducing the maintenance cost.

1 is a block diagram of a wireless FM / DMB frequency signal relay apparatus according to the present invention.
2 is a block diagram of a relay module of a wireless FM / DMB frequency signal relay apparatus according to the present invention.

Hereinafter, a configuration and operation of a wireless FM / DMB frequency signal relay apparatus according to the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a wireless FM / DMB frequency signal relay apparatus according to the present invention.

Referring to FIG. 1, a wireless FM / DMB frequency signal relay apparatus 1 having a wavelength adjusting function according to the present invention includes a module body 2 and a relay module 100.

The module body 2 includes one input port 101 and an antenna port 102 as an output terminal to which the antenna is connected and may further include the monitoring port 103 according to the embodiment. The relay module 100 is formed inside the module main body 2 and the outer surface of the module main body 2 is connected to the outer surface of the relay module 100 So that the wavelength adjustment value input unit 211 is exposed.

The wavelength adjustment value input unit 211 includes a variable inductance input unit 212 and a variable capacitance input unit 213. The variable inductance input unit 212 and the variable capacitance input unit 213 are configured to be rotatable in the left and right directions as shown in FIG. 1, and the variable inductor and the variable capacitance have different inductances and capacitances according to the degree of rotation.

The input port 101 receives a radio frequency (RF) signal through a coaxial cable or the like, and transmits the RF signal to the relay module 100. The radio frequency signal is a mixed radio frequency (FM) signal in which a frequency modulation (FM) broadcast signal (hereinafter referred to as "FM signal") and a digital multimedia broadcast (DMB) signal Signal. However, in the present invention, the radio frequency signal is not limited to a mixed radio frequency signal.

As shown in FIG. 1, the antenna port 102 may be configured to protrude to the outside so that another antenna or a coaxial cable to which an antenna is connected may be connected, and a chip antenna may be connected to the inside of the module body 2.

The monitoring port 103 is connected to an external device and transmits mixed radio frequency signal monitoring information detected through the relay module 100 to an external device. The connection means with the external device may be a coaxial cable type as shown in FIG. 1, and a radio frequency signal output from the antenna port 102 can be monitored by an external device through a connected cable.

The relay module 100 includes the wavelength adjustment value input unit 211 and only the wavelength adjustment value input unit 211 is exposed on the outer side of the module body 2 and the rest is exposed to the inside of the module body 2 .

The detailed configuration and operation of the relay module 100 will be described in detail with reference to FIG.

2 is a diagram illustrating a configuration of a relay module of a relaying signal distribution apparatus including a mixed radio frequency signal and a DC signal according to the present invention.

2, the relay module 100 includes an impedance matching unit 110, a tilt adjusting unit 120, a radio frequency signal processing unit 140, and an antenna wavelength adjusting unit 210. In accordance with the embodiment, A low noise amplifier (LNA) 130, a high power amplification unit (HPA) 200, a modem 220, an input RF level measurement unit 230, an input RF level display unit 240, A level measurement unit 250 and an output RF level display unit 250. [

The impedance matching unit 110 matches the RF signal input through the input port 101 to the impedance of the device and transmits the RF signal to the tilt adjusting unit 120.

The tilt adjusting unit 120 compensates for a loss occurring in the coaxial cable according to a frequency band difference included in the RF signal input from the impedance matching unit 110 and outputs the compensated signal to the RF signal processing unit 140.

More specifically, when the radio frequency signal is a mixed radio frequency signal in which the FM signal and the DMB signal are mixed, a difference occurs in the signal loss occurring on the coaxial cable depending on the frequency band difference between the FM signal and the DMB signal. That is, since the FM signal band has a lower frequency band than the T-DMB signal frequency band, the loss in the coaxial cable is relatively small. Conversely, the T-DMA signal has a higher frequency band than the FM signal band, so the loss on the coaxial cable is relatively large.

In order to compensate the above problem, the tilt adjusting unit 120 includes a resistor R and a capacitor C to match the resonance points of the desired band to reverse the respective curves, Adjust the gain to be constant.

Here, the resistor R may be a variable resistor of 100 OMEGA, and the curve of the slope of the T-DMB signal band in the FM signal band is determined by adjusting the value of the variable resistor. The resistance value of the variable resistor may be manually changed by a device user or an administrator at the time of production or maintenance of the apparatus or may be changed under the control of the control unit 180 of the radio frequency signal processing unit 140 to be described later . In the latter case, the control unit 180 should be monitoring the band of the mixed radio frequency signal.

The inductor L may be a fixed inductor of 47 uH and may be interlocked with the value of the variable resistor R and the value of the capacitor C to adjust the signal loss rate per frequency band.

A fixed capacitor of 20 pF can be used as the capacitor C. The impedance of the capacitor C is interlocked by the value of the variable resistor R and the value of the inductor L so that the impedance of each frequency band is not abruptly lowered.

The RF signal processing unit 140 amplifies the RF signal with the signal loss compensated in the tilt adjusting unit 120, adjusts the gain to enhance the RF signal, and transmits the RF signal to the antenna wavelength adjusting unit 210.

When the radio frequency signal is a mixed radio frequency signal, the radio frequency signal processing unit 140 includes a relay distributor 150, an FM relay processing unit 160, a DMB relay processing unit 170, a control unit 180, and a mixing unit 190, .

The relay distribution unit 150 divides the amplified mixed radio frequency signal into two signals to generate a temporary divided mixed radio frequency signal, one to the FM relay processing unit 160, and the other to the DMB relay processing unit 170 send.

The FM relay processing unit 160 includes the FM low pass filtering unit 161, the FM amplifying unit 162, the FM gain adjusting unit 163 and the FM high pass filtering unit 164, And outputs the filtered FM signal as a filtered signal. The FM signal is then filtered to obtain a filtered mixed FM signal.

More specifically, the FM low-pass filtering unit 161 passes only the frequency 108 MHz before the end of the frequency band of the FM signal (~108 MHz) in the temporary split mixed radio frequency signal. That is, the FM low-pass filtering unit 161 blocks the DMB signal from the temporal divided mixed radio frequency signal and filters and outputs only the FM signal.

The FM amplifier 162 amplifies and outputs the filtered FM signal.

The FM gain adjuster 163 adjusts the gain so that the amplified FM signal can be constantly output at a predetermined output level. The FM gain adjusting unit 163 may detect the output level of the FM signal and provide the detected level to the control unit 180 and may be configured to control the gain under the control of the control unit 180. [

The FM high-pass filtering unit 164 passes only the frequency after 88 MHz which is the starting point of the frequency band of the FM signal. That is, the FM high-pass filtering unit 164 blocks the frequency signal before the FM signal frequency band.

It may be configured to filter only the FM signal by applying an FM band pass filtering unit instead of the FM low pass filtering unit 161 and the FM high pass filtering unit 164.

The DMB relay processing unit 170 includes a DMB high pass filtering unit 171, a DMB amplifying unit 172, a DMB gain adjusting unit 173, and a DMB low pass filtering unit 174, And outputs the filtered DMB signal to the DMB receiving terminal 200. The DMB receiving terminal 200 receives the temporarily divided mixed radio frequency signal output from the DMB receiving terminal 200,

More specifically, the DMB high-pass filtering unit 171 passes only the frequency (174 MHz ~) at 174 MHz or later which is the starting point of the frequency band of the DMB signal in the temporary split mixed radio frequency signal. That is, the DMB high-pass filtering unit 171 blocks the FM signal in the temporal divided mixed radio frequency signal, and filters and outputs only the DMB signal.

The DMB amplifying unit 172 amplifies and outputs the filtered DMB signal.

The DMB gain adjuster 173 adjusts the gain so that the amplified DMB signal can be output constantly at a predetermined output level. The DMB gain adjuster 173 may detect the output level of the DMB signal and provide the detected level to the controller 180, and may be configured to control the gain under the control of the controller 180.

The FM low-pass filtering unit 174 passes only the frequency before 216 MHz which is the end point of the frequency band of the FM signal. That is, the DMB low pass filtering unit 174 blocks frequency signals after the DMB signal frequency band.

The DMB band pass filtering unit may be applied instead of the DMB high pass filtering unit 171 and the DMB low pass filtering unit 174 to filter only the DMB signal.

The mixing unit 190 combines the FM signal relayed by the FM relay processing unit 160 and the DMB signal processed by the DMB relay processing unit 170 to generate a mixed radio frequency signal, Lt; / RTI >

The FM relay processing unit 160 may further include an FM intensity detector 165 for detecting and outputting the intensity of the amplified FM signal output from the FM amplifier 162. The DMB relay processor 170 And a DMB intensity detector 175 for detecting and outputting a signal intensity of the amplified DMB signal output from the DMB amplifying unit 172.

The control unit 180 receives the FM signal intensity detected by the FM intensity detection unit 165 and the DMB signal intensity detected through the DMB intensity detection unit 175 and controls each of the gain adjustment units 163 and 173, Signals and the gain of the DMB signal.

The antenna wavelength adjustment unit 210 includes a variable inductor 214 and a variable capacitance input unit 213 including a wavelength adjustment value input unit 211 and a variable inductance input unit 212 of the wavelength adjustment value input unit 211 The inductance of the variable inductor 214 and the capacitance of the variable capacitor 215 set by the variable inductance input part 212 and the variable capacitance input part 213 of the wavelength adjustment value input part 211, The wavelength of the RF signal relayed in the RF signal processing unit 140 is adjusted and output through the antenna port 102. [

The variable inductor 214 preferably has a variable inductance of 30 nH to 180 nH, and is used for wavelength length adjustment matching of the antenna.

The variable capacitor 215 preferably has a variable capacitance of 1 pF to 20 pF, and is used for RF impedance matching with the antenna.

The low noise amplifier (LNA) 130 is connected between the tilt adjusting unit 120 and the RF signal processor 140, and low noise amplifies and outputs a gain-compensated RF signal from the tilt adjuster 120.

The high power amplifier (HPA) 200 is connected between the RF signal processor 140 and the antenna wavelength adjuster 210 to finally amplify the radio frequency signal reinforced by the RF signal processor 140, And outputs it to the adjustment unit 210.

The modem 220 is a frequency variable modem composed of a single chip capable of varying the frequency under the control of the controller 180, and is a frequency shift keying (FSK) modulation modem. The modem 200 outputs a variable FSK modulation signal under the control of the controller 180 in a radio frequency signal input through the input port 101 or receives an FSK modulation signal included in the radio frequency signal, It performs communication between other equipments by FSK modulated signal, and provides status monitoring and control function of each equipment.

The relay module 100 further includes an input radio frequency (RF) level measuring unit 230 and an output radio frequency level measuring unit 250 to measure a radio frequency signal input through the input port 101 and an antenna port 102, that is, a signal electric field intensity of a radio frequency signal, and outputs the measured signal electric field intensity.

The measured input radio frequency signal level and output radio frequency signal level may be input to the input radio frequency signal level display unit 240 and the output radio frequency signal level display unit 260 respectively, .

The relay module 100 further includes an input radio frequency level display unit 240 and an output radio frequency level display unit 260. The input radio frequency level measurement unit 230 and the output radio frequency level measurement unit 250 And displays the level of the measured radio frequency signal, respectively. The input RF level display unit 240 and the output RF level display unit 260 may be a light emitting diode (LED), a flexible numeric display (FND), a liquid crystal display (LCD) will be.

The input radio frequency level display unit 240 and the output radio frequency level display unit 260 may receive and display the input radio frequency signal level and the output radio frequency signal level from the input radio frequency level measurement unit 230, (180).

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be easily understood. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, it is intended to cover various modifications within the scope of the appended claims.

1: Wireless FM / DMB frequency signal relay
2: Module body
100: Relay module 101: Input port
102: Antenna port 103: Monitoring port
110: Impedance matching unit 120: Tilt adjustment unit
130: low noise amplifier (LNA) 140: radio frequency signal processor
150: relay distribution unit 160: FM relay processing unit
161: FM low-pass filtering unit 162: FM amplifier unit
163: FM gain control unit 164: FM high pass filtering unit
170: DMB relay processing unit 171: DMB high pass filtering unit
172: DMB amplifying unit 173: DMB gain adjusting unit
174: DMB low pass filtering unit 180:
190: mixing section 200: high power amplifier section (HPA)
210: Antenna wavelength adjustment unit 211: Wavelength adjustment value input unit
212: variable inductance input unit 213: variable capacitance input unit
214: variable inductor 215: variable capacitor
220: modem 230: input RF level measuring unit
240: Input RF level display unit 250: Output RF level measurement unit
260: Output RF level indicator

Claims (11)

An input port for receiving a radio frequency (RF) signal, and
A module body having an antenna port protruding outwardly and connected to antennas of different lengths and shapes and transmitting an RF signal reinforced by a connected antenna; And
And a controller for controlling a wavelength of a radio frequency signal inputted through the input port according to a wavelength adjustment value preset to correspond to an antenna connected to the antenna port of the module body, A relay module for transmitting the relay module,
The relay module includes:
An impedance matching unit for matching a radio frequency signal input through the input port with an impedance of the device and transmitting the radio frequency signal;
A signal loss occurring upon reception through a coaxial cable connected to the input port according to a frequency band difference of at least one or more signals included in a radio frequency signal of a radio frequency signal input from the impedance matching unit, A tilt adjusting unit for outputting a frequency signal;
A radio frequency signal processor for relaying and enhancing a radio frequency signal compensated for the signal loss and outputting the radio frequency signal; And
And an antenna wavelength adjusting section for adjusting and outputting the wavelength of the relayed radio frequency signal according to the wavelength adjustment value set in advance so as to correspond to the antenna,
Wherein the antenna wavelength adjusting unit comprises:
A variable inductance input part which is protruded outside the module body and is rotatable in the left and right direction and adjusts the inductance according to the left and right rotations; a variable inductance input part which is protruded outside the module main body and is rotatable in the left and right direction, A wavelength adjustment value input unit including an input unit;
A variable inductor for performing a wavelength length adjustment matching of the antenna with respect to the RF signal according to an inductance of the variable inductance input unit; And
And a variable capacitor for performing radio frequency impedance matching with the antenna for the radio frequency signal in accordance with the capacitance of the variable capacitance input unit.
delete The method according to claim 1,
Wherein the tilt adjusting unit comprises:
A variable resistor, a fixed capacitor, and a fixed inductor,
Wherein the variable resistor determines a slope curve of the radio frequency signal according to the adjusted variable resistance value,
The fixed capacitor is coupled to the resistance of the variable resistor and the value of the inductor to perform impedance matching to maintain the impedance of each frequency band constant,
Wherein the fixed inductor is interlocked with the resistance value of the variable resistor and the value of the capacitor to adjust the signal loss rate for each frequency band.
The method according to claim 1,
The radio frequency signal is a mixed radio frequency signal in which an FM signal and a DMB signal are mixed,
Wherein the radio frequency signal processor comprises:
A relay distribution unit for distributing the mixed radio frequency signal to output a temporary distributed mixed radio frequency signal;
An FM relay processing unit for filtering the FM signal from the temporary distribution mixed radio frequency signal distributed in the relay distribution unit, and performing a reinforcement according to the relaying and outputting the FM signal;
A DMB relay processing unit for filtering a DMB signal from the temporary distribution mixed radio frequency signal distributed in the relay distribution unit, performing a relay enhancement on the DMB signal, and outputting the signal; And
And a mixing unit for combining the FM signal reinforced through the FM relay processing unit and the DMB signal reinforced through the DMB relay processing unit to generate and output a reinforced mixed radio frequency signal. DMB frequency signal repeater.
5. The method of claim 4,
The FM relay processing unit,
An FM low-pass filtering unit for performing low-pass filtering on the temporary distribution mixed radio frequency signal distributed in the relay distribution unit and outputting an FM signal;
An FM amplifier for amplifying and outputting the FM signal;
An FM gain controller for adjusting and outputting the gain of the amplified FM signal; And
And an FM high-pass filtering unit for performing high-pass filtering on the FM signal whose gain is adjusted and outputting the resultant signal.
5. The method of claim 4,
The DMB relay processing unit,
A DMB high-pass filtering unit for performing a high-pass filtering on the temporary distribution mixed radio frequency signal distributed in the relay distribution unit to output a DMB signal;
A DMB amplifier for amplifying and outputting the DMB signal;
A DMB gain controller for adjusting and outputting the gain of the amplified DMB signal; And
And a DMB low-pass filtering unit for performing low-pass filtering on the DMB signal whose gain is adjusted and outputting the resultant signal.
The method according to claim 1,
And a low noise amplifying unit connected between the tilt adjusting unit and the RF signal processing unit for low noise amplifying the RF signal output from the tilt adjusting unit and transmitting the amplified RF signal to the RF signal processing unit. Wireless FM / DMB frequency signal relay device.
The method according to claim 1,
And a high power amplifier connected between the radio frequency signal processor and the antenna tuner for amplifying a radio frequency signal output from the RF signal processor and transmitting the amplified radio frequency signal to the antenna wavelength adjuster. Wireless FM / DMB frequency signal relay device.
The method according to claim 1,
An input RF level measuring unit connected between the input port and the impedance matching unit for measuring a level of a radio frequency signal inputted through an input port and outputting a radio frequency signal level; And
And an input RF level display unit for receiving and displaying the RF signal level.
9. The method of claim 8,
An output RF level measuring unit connected between the high power amplifier and the antenna wavelength adjuster for measuring a level of a radio frequency signal output from the high power amplifier and outputting a radio frequency signal level; And
And an output RF level display unit for receiving and displaying the RF signal level. delete

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